Introduction: This guide compares the Joyee J-SH107 infrared sauna and Ocean Future OF-402U hot tub to help you maximize limited space.   Urban living and modern home design often present a significant challenge: the desire for luxury wellness amenities clashes with the reality of limited square footage. When you have exactly one square meter of spare room—perhaps a corner in the master bedroom, a slice of the bathroom, or a small enclosed balcony—the decision of how to utilize that space becomes critical. For years, the default choice for home relaxation was the traditional hot tub or whirlpool bath. However, a seismic shift is occurring in the home wellness market.Homeowners are increasingly moving away from water-based systems that require heavy plumbing and chemical maintenance, pivoting instead toward dry, technology-driven solutions. The contest today is between the Joyee J-SH107, a diamond-shaped corner infrared sauna, and the Ocean Future OF-402U, a compact traditional spa....